Last ones 17a - Yield to mobhelf-heartedly, with off-putting possibilities? (10) 35a - Scoff about sailors lacking a landowner's right (8) 54a - Husband goes for nitrogen in a couple of acres, planting popular fruit (9) [I've got nectarine but don't see hot it all works] 18d - Damp condition of French ship outside port? (8) 37d - Skillfully securing note on stringed instrument? Indeed (10) 41d - Offspring of necessity fabricating untruth (9) Thanks in advance can't think today
17a Defer-rab(b)le
35a Easement - 'Eat' (about) 'se(a)men'
54a Nectarine - N for H - (h)ectare + in
18d De-wine-SS
37d Ab-so-lute-ly
41d Invention ("Necessity is the mother of...")
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